Danbias/OysterGraphics/Engine.h

#pragma once

#ifndef Engine_h
#define Engine_h

#define NOMINMAX // Because I hate Microsoft now. ~Angry Dan. http://lolengine.net/blog/2011/3/4/fuck-you-microsoft-near-far-macros

#include "EngineIncludes.h"

namespace Oyster
{
	class Engine
	{
	private:
		Engine();
		~Engine();
		
	public:
		class Init
		{
		public:
			struct Setup
			{
				int NrOfBuffers;
				bool MSAA_Quality;
				bool Fullscreen;
				bool SingleThreaded;
				bool Reference;
				bool ForceDX11;
				bool GenerateDepthStencil;
				bool BindDefault;
				//all but Window params have Default Values
				Setup()
				{
					NrOfBuffers=1;
					MSAA_Quality = false;
					Fullscreen = true;
					SingleThreaded = true;
					Reference = false;
					ForceDX11 = false;
					GenerateDepthStencil = true;
					BindDefault = true;
				}

			};

			static bool IsInstanced();

			//Creates Device and DeviceContext, if not Initialized
			static bool Instance(bool SingleThreaded=true,bool Reference=false,bool ForceDX11=false);
			static bool HasSwapChain();
			
			//Creates Swapchain, if not Aready Created
			static bool CreateSwapChain(HWND Window, int NrofBuffers=1,bool MSAA_Quality=false,bool Fullscreen=true);

			//CreateWindow, if Not Already Created
			static bool InitializeWindow(const LPCSTR appName, const LPCSTR className,const HINSTANCE &hInstance, const int &nCmdShow, WNDPROC wProc, bool HandleLoop = false );
			
			//Performs a full initialization of a rendering pipeline, including a Window
			static bool FullInit(const Setup& setup);
			struct Buffers
			{
				static Buffer* CreateBuffer(const Buffer::BUFFER_INIT_DESC BufferDesc);
			};
		private:
			Init();
			~Init();
		};

		class States
		{
		public:
			//SSAO Quality
			static void SetNrOfSSAOSamples(int);
			static int GetNrOfSSAOSamples();

			//SSAO Frequency
			static void SetSSAOSampleSpread(int);
			static int GetSSAOSampleSpread();

			//PointLights
			static void SetMaxPointlights(int);
			static int GetMaxPointlights();


		private:
			States();
			~States();
		};

		class Render
		{
		public:
			/// Render a number of models, setting the Per model data to the included cBuffer
			/// specify NULL if no such data exists
			static void Geometry(const Oyster::Render::Model* models,int count,Oyster::Buffer* cBufferEveryObject, int slot);
			static void Text(std::string text, Oyster::Math::Float2 size, Oyster::Math::Float3 Pos);
			//static void TextBox(const Oyster::Render::

			//ensure that a compatible 2D shadereffect is applied
			static void ScreenQuad(ID3D11ShaderResourceView* srv, float ZPos=1);

			//ensure that a compatible 2D shadereffect is applied and that pos.z is between 0 and 1
			static void Sprite(ID3D11ShaderResourceView* srv, Oyster::Math::Float2 size, Oyster::Math::Float3 Pos);

			static void PresentScene();

		private:
			Render();
			~Render();
		};

		class PrepareForRendering
		{
		public:
			//Binds several rendertargets and a depthstencil
			static void BindRenderTargets(ID3D11RenderTargetView** RenderTargets,int NrOfTargets,ID3D11DepthStencilView* depth);

			//Binds several Rendertargest and a default depthstencil
			static void BindRenderTargets(ID3D11RenderTargetView** RenderTargets,int NrOfTargets);

			//Binds the backbuffer and a depthstencil
			static void BindBackBuffer(ID3D11DepthStencilView* depth);

			//Binds the backbuffer and a default depthstencil
			static void BindBackBuffer();

			//Binds the backbuffer to the compute shader
			static void BindBackBufferAsUAV();

			//binds several UAV to the computeshader
			static void BindUAV(ID3D11UnorderedAccessView** uav, int NrOfUavs);

			//Clears the backbuffer and default depthstencil
			static void ClearBackBuffer(Math::Float4 color);

			static void Begin2DRender();

			static void Begin2DTextRender();
		};

		class Pipeline
		{
		public:
			class Deffered_Lightning
			{
			public:
				//Basic Setup
				static void NewFrame(const Float4& Color, const Matrix& View, const Matrix& Projection);

				//Geometry Pass
				static void BeginRenderGeometry();
				static void RenderGeometry(const Oyster::Render::Model* models,int count);
				static void EndRenderGeometry();

				//Lightning Pass
				static void InputPointLights(Oyster::Resources::BufferDefinitions::PointLightDescription *p, int NrOfPointlights );
				static void RenderLightning();
			};
		};
	};
};

#endif